Just got my 01. 5 last week. Want to start out with gauges and exhaust. I was wondering of it was worth $120 for a fuel pressure isolator(for mechanical gauge). Does this effect the gauge at all?Better/worse? I am planning to mount in the a-pillar and was curious about being able to fit the stainless steel line up to that area. Thanks for any info this site is the cause of my bloodshot eyes!!!